1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp. 4 * <benh@kernel.crashing.org> 5 */ 6 7 #ifndef _ASM_POWERPC_DCR_H 8 #define _ASM_POWERPC_DCR_H 9 #ifdef __KERNEL__ 10 #ifndef __ASSEMBLY__ 11 #ifdef CONFIG_PPC_DCR 12 13 #ifdef CONFIG_PPC_DCR_NATIVE 14 #include <asm/dcr-native.h> 15 #endif 16 17 #ifdef CONFIG_PPC_DCR_MMIO 18 #include <asm/dcr-mmio.h> 19 #endif 20 21 22 /* Indirection layer for providing both NATIVE and MMIO support. */ 23 24 #if defined(CONFIG_PPC_DCR_NATIVE) && defined(CONFIG_PPC_DCR_MMIO) 25 26 #include <asm/dcr-generic.h> 27 28 #define DCR_MAP_OK(host) dcr_map_ok_generic(host) 29 #define dcr_map(dev, dcr_n, dcr_c) dcr_map_generic(dev, dcr_n, dcr_c) 30 #define dcr_unmap(host, dcr_c) dcr_unmap_generic(host, dcr_c) 31 #define dcr_read(host, dcr_n) dcr_read_generic(host, dcr_n) 32 #define dcr_write(host, dcr_n, value) dcr_write_generic(host, dcr_n, value) 33 34 #else 35 36 #ifdef CONFIG_PPC_DCR_NATIVE 37 typedef dcr_host_native_t dcr_host_t; 38 #define DCR_MAP_OK(host) dcr_map_ok_native(host) 39 #define dcr_map(dev, dcr_n, dcr_c) dcr_map_native(dev, dcr_n, dcr_c) 40 #define dcr_unmap(host, dcr_c) dcr_unmap_native(host, dcr_c) 41 #define dcr_read(host, dcr_n) dcr_read_native(host, dcr_n) 42 #define dcr_write(host, dcr_n, value) dcr_write_native(host, dcr_n, value) 43 #else 44 typedef dcr_host_mmio_t dcr_host_t; 45 #define DCR_MAP_OK(host) dcr_map_ok_mmio(host) 46 #define dcr_map(dev, dcr_n, dcr_c) dcr_map_mmio(dev, dcr_n, dcr_c) 47 #define dcr_unmap(host, dcr_c) dcr_unmap_mmio(host, dcr_c) 48 #define dcr_read(host, dcr_n) dcr_read_mmio(host, dcr_n) 49 #define dcr_write(host, dcr_n, value) dcr_write_mmio(host, dcr_n, value) 50 #endif 51 52 #endif /* defined(CONFIG_PPC_DCR_NATIVE) && defined(CONFIG_PPC_DCR_MMIO) */ 53 54 /* 55 * additional helpers to read the DCR * base from the device-tree 56 */ 57 struct device_node; 58 extern unsigned int dcr_resource_start(const struct device_node *np, 59 unsigned int index); 60 extern unsigned int dcr_resource_len(const struct device_node *np, 61 unsigned int index); 62 #endif /* CONFIG_PPC_DCR */ 63 #endif /* __ASSEMBLY__ */ 64 #endif /* __KERNEL__ */ 65 #endif /* _ASM_POWERPC_DCR_H */ 66